ECN Forum Forums Photo Discussion Forums Photos for General Discussion Transformer Room

My High School had an old style oil switch located outside the metal/auto shops. It controlled the primary of the indoor dry transformer serving the entire east side of the campus. Despite being in a fenced, (but close-fitting) chain link cage, it had failed violently TWICE when pranksters opened it under load. (It did have a sign posted , "DO NOT OPEN UNDER LOAD", but who in H.S. other than oh, me, knew what that meant?) The handle could be reached through the gap in the fence and it wasn't locked in the on position.